I want to replace a couple of my windows which are misted up. So in order to
avoid appearing a total amateur I need to know -
How to order the units, ie are they specified as total thickness of the unit
or as the separate thicknesses? ISTR hearing that some windows have a 6mm
and a 4mm, and some need two X 6mm. Also that some have to have toughened
And how many kinds of the rubber seals are there, will I need to provide a
Any links to good DIY sites or suppliers would be appreciated.
 Which I am, but I don't like to advertise the fact.
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